装载机铲装停机面以下物料时，切土深度一般保持在（）mm左右，直至铲斗装满。装满收斗后，将铲斗举升到运输位置，再驶离工作面，运至卸料处。 ["50～100","100～150","150～200","200～300"]
All ships which, in accordance with the present Convention, are required to carry radio installations shall carry（）. ["Q-code","Telephone numbers and addresses","the international Codes of Signals","radio instructio"]
社会信用体系建设的支撑是（） ["提高全社会的诚信意识和信用水平","信用信息合规应用和信用服务体系","健全覆盖社会成员的信用记录和信用基础设施网络","树立诚信文化理念、弘扬诚信传统美德"]
6.0mm盘条的许用拉力是（）。 ["A.3.98kN","B.4.73kN","C.5.56kN","D.9.47kN"]
将动臂略微提起，并转动铲斗使其与地面成10°～30°的铲土角，然后前进铲装，这种作业法适合（）。 ["铲挖停机面以下物料","铲装松散料堆物料","铲装硬质堆状物料","刮平作业"]
建筑物按其使用性质可分为哪几种？
